A within-subject examination of grandparents’ physical activity and sedentary behavior levels in the presence or absence of grandchild care provision

Table 3 Crude means of PA and SB levels during a care day and a non-care day

Outcome variables	Mean ± SD
Light intensity physical activity (LIPA) (% of time/day)
Care day	33.5 ± 8.6
Non-care day	29.5 ± 9.4
Moderate-to-vigorous intensity physical activity (MVPA) (% of time/day)
Care day	3.7 ± 3.3
Non-care day	4.0 ± 4.1
Sedentary behavior (SB) (% of time/day)
Care day	62.8 ± 9.2
Non-care day	66.5 ± 10.0

SD: standard deviation; LIPA: light intensity physical activity; MVPA: moderate-to-vigorous intensity physical activity; SB: sedentary behavior. The symbol “%” is used to indicate a percentage. In this case, these percentages indicate the proportion of total time spent on physical activity (PA) and sedentary behavior (SB) relative to the total wear time (i.e., care day or non-care day). It indicates the proportion of time spent on PA and SB relative to 100 (i.e., corresponding with the total accelerometer wear time during waking hours) and can help provide a general understanding of how much time was spent on these different activity levels

ISSN: 1861-6909